Spring-mounting



M. STABTLER. smmemoumms.

I APPLICATION FILED MAY 24r-1-920. 1,364,329.

Patented Jan. 4, 1921;

Efi MMW l9 Ill MATHIAS STADTLER, OF CHICAGO, ILLINOIS.

SPRING-MOUNTING.

Specification of Letters Patent.

Patented Jan. 4, 1921.

Application filed May 24, 1920. Serial No. 383,690.

To all whom it may concern:

Be it known that I, MATHIAS STADTLER, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Spring-Mountings, of which the following is a specification.

My invention relates to spring mountings, more particularly for upholstery and the like, and the general object of the invention is to provide a structure adapted to take advantage of the resiliency, both of a so-called spiral spring and of metallic, supporting strips which are also resilient. In my prior Patent No. 1,324, 5-38, the metallic strips or cross members which support the spiral springs, are apertured for the reception of hooks by which the base of the spring is anchored in position. The perforating of the cross members, however, has certain disadvantages, among them being that it weakens the strip to a certain extent and is not particularly economical from the production standpoint. One of the objects of my present invention is to provide a quickly applied and efiicient fastening means, applicable to a non-perforated strip; another object is to provide means for insuring against any slippage or displacement of the spring upon the strips or cross members. Another object is to provide simple and efficient means for preventing the production of a clicking noise or metallic sound when the springs are compressed. Contributory objects will become apparent as the description proceeds.

I accomplish my objects by the construction illustrated in the accompanying drawings, in which Figure 1 is a perspective view of the assembled structure;

Fig. 2 is a side elevation of one of the fastener clips, showing it in the process of being applied to the cooperating parts;

Fig. 3 is a top plan view of the parts shown in Fig. 2;

Fig. 4 is an end view of the parts shown in Fig. 2, the View being taken looking toward the right;

Fig. 5 is a perspective view of one of the fastener clips.

Like numerals denote like parts throughout the several views.

The cross members 1, 1 are imperforate, corrugated, metallic strips. Their width, thickness and composition may be varied to su1t the conditions under which they will operate. It will be understood, of course, that in upholstery or bed structures, they are arranged in transverse sets and secured at the ends to any suitable frame. As these matters are well understood, further details will be unnecessary. On account of the transverse corrugations, the cross strips are resilient to a moderate degree, and they thus supplement the effect of the springs which they support.

The springs 2, are of the usual type used for beds, upholstery cushions and the like, and in the assembled structure, the bottom turn 52 seats in the depressions in the cross strips. The springs are held seated by clips of pliable sheet metal. In its preferred form, the clip has a body portion 8 having two long prongs 4, 4 extending from one end, and two short lugs 5, 5 projecting from the other end.

The length of the body portion is approximately equal to the width of a cross strip and the prongs are of considerably greater length, to enable them to be bent around the strip as best indicated in Fig. 1. \Vhen the body of the clips is in place over a cross strip, the prongs pass entirely across the under surface, then pass up and between the lugs 5, and then in the reverse direction over the top of said body 8. This holds the cross strip and spring firmly together.

In the completely developed form of the invention, the ends of the prongs & are secured by means of a cord 8, which passes lengthwise of the strips overlying the prongs, and itself being held down in position by a spring finger 10. The free end of this finger is upturned to facilitate slipping the cord under it. It is evident that when the parts are thus assembled, there is no reasonable possibility of the prongs being displaced.

In practice, it is suflicient to employ two clips at a given end of the spring, one for holding the lower turn in engagement with.

one of the cross strips, and the other for holding it in engagement with the transverse cross strip. When the parts are assembled in the manner described, they will be found to be very securely fastened together, for the load tends to hold the spring seated in the depressions of the corrugations, and little strain is placed upon the clips. The spring wire cannot shift longitudinally along a strip, as it is held by the adjacent ridges of the corrugations. Although four clips may be employed if desired, it is neverthe less sufficient in practically all cases, to employ but two clips, as one of them, cooperating with the ridges of its associated strip, prevents movement in one direction, and the other clip in a similar way, prevents movement in the transverse direction.

The cord 8 which is usually of hemp, cotton or other vegetable fiber, not only serves as a retaining member for holding the prongs down close upon the top of the body part of the clip, but also as a cushion to prevent any metallic sound when the spring is compressed as the turn above would otherwise strike the cross member beneath. In other words, the cords render the structure soundless, or practically so.

It will be noted that in this improved structure, the strips are not perforated, and the result is that they possess maximum strength for the amount of material used in making them. But of greater importance, isthe fact that they readily lend themselves to manufacture, as the strips may be passed through a crimping or corrugating machine and no dies or punches are required for producing perforations. Furthermore, as the corrugations are located relatively close together, the springs may be seated in practically any desired position lengthwise of the strip. This makes it possible to place the cross strips close together or far apart in the main structure, and hence, the strips may in this sense, be regarded as universal. The clips also may be regarded as more or less universal, as they are applicable to various widths of strips so long as a certain maximum width is not exceeded. This is due to the fact that the prongs may be made to fit the particular strip in hand. It will also be noted that the clips may be readily formed by stamping, and made from a single piece of material.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

l. A spring structure having a coiled spring, a supporting strip beneath it, and a clip having a body portion adapted to hold the end turn of the spring in contact with one surface of the strip, the clip also having prongs adapted to straddle the spring wire and to pass across the opposite surface of the strip, the prongs being long enough to be bent around the free end of the body por tion of the clip for holding the parts as sembled.

2. A spring structure having a coiled spring, a supporting strip beneath it, and a clip having a body portion adapted to hold the end turn of the spring in contact with one surface of the strip, the clip also having prongs adapted to straddle the spring wire and to pass across the opposite surface of the strip, the prongs being long enough to be bent around the free end of the body por tion of the clip for holdin the parts assembled, the body portion a so having lugs at its free end adapted to pass to the outside of the prongs to prevent them from. spreading.

3. In combination, a coiled spring, a supporting strip beneath the spring, said strip having corrugations between which the lower turn of the spring seats, a clip having a body portion and prongs adapted to straddle the spring wire and to be wrapped around the strip for holding it in close contact with the spring, a cord forretaining the free end of the prongs, and means for securing the cord.

In an upholstery structure, a coiled spring, a corrugated supporting strip for the spring, a clip having prongs adapted to be wrapped around the strip for holding the spring wire seated in contact with the strip, a spring finger, and a cord adapted to pass beneath said spring finger and to overlie the ends of the prongs for holding the latter in acting position,

In witness whereof, I have hereunto subscribed my name. 7

MATHIAS STADTLER. 

